java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label04_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:29:45,253 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:29:45,257 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:29:45,277 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:29:45,277 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:29:45,279 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:29:45,280 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:29:45,285 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:29:45,287 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:29:45,288 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:29:45,289 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:29:45,289 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:29:45,290 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:29:45,291 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:29:45,292 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:29:45,293 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:29:45,294 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:29:45,295 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:29:45,297 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:29:45,299 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:29:45,300 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:29:45,301 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:29:45,306 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:29:45,313 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:29:45,313 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:29:45,314 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:29:45,314 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:29:45,315 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:29:45,333 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:29:45,333 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:29:45,334 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:29:45,334 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:29:45,335 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:29:45,335 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:29:45,335 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:29:45,335 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:29:45,335 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:29:45,336 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:29:45,336 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:29:45,336 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:29:45,337 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:29:45,337 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:29:45,337 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:29:45,337 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:29:45,338 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:29:45,338 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:29:45,338 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:29:45,338 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:29:45,338 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:29:45,339 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:29:45,339 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:29:45,339 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:29:45,339 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:29:45,339 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:29:45,339 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:29:45,340 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:29:45,340 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:29:45,340 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:29:45,340 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:29:45,340 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:29:45,341 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:29:45,341 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:29:45,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:29:45,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:29:45,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:29:45,416 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:29:45,417 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:29:45,418 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label04_false-unreach-call.c [2018-11-07 00:29:45,485 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd0b5d96/d1f009df0abe4a0aa683fb63bd972639/FLAG22c40872e [2018-11-07 00:29:46,140 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:29:46,141 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label04_false-unreach-call.c [2018-11-07 00:29:46,163 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd0b5d96/d1f009df0abe4a0aa683fb63bd972639/FLAG22c40872e [2018-11-07 00:29:46,183 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd0b5d96/d1f009df0abe4a0aa683fb63bd972639 [2018-11-07 00:29:46,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:29:46,196 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:29:46,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:29:46,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:29:46,201 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:29:46,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:29:46" (1/1) ... [2018-11-07 00:29:46,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63590d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:46, skipping insertion in model container [2018-11-07 00:29:46,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:29:46" (1/1) ... [2018-11-07 00:29:46,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:29:46,321 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:29:47,150 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:29:47,155 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:29:47,378 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:29:47,399 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:29:47,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:47 WrapperNode [2018-11-07 00:29:47,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:29:47,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:29:47,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:29:47,401 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:29:47,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:47" (1/1) ... [2018-11-07 00:29:47,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:47" (1/1) ... [2018-11-07 00:29:47,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:29:47,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:29:47,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:29:47,604 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:29:47,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:47" (1/1) ... [2018-11-07 00:29:47,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:47" (1/1) ... [2018-11-07 00:29:47,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:47" (1/1) ... [2018-11-07 00:29:47,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:47" (1/1) ... [2018-11-07 00:29:47,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:47" (1/1) ... [2018-11-07 00:29:47,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:47" (1/1) ... [2018-11-07 00:29:47,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:47" (1/1) ... [2018-11-07 00:29:47,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:29:47,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:29:47,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:29:47,788 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:29:47,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:29:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:29:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:29:47,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:29:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:29:47,869 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:29:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:29:47,869 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:29:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:29:47,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:29:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:29:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:29:54,461 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:29:54,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:54 BoogieIcfgContainer [2018-11-07 00:29:54,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:29:54,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:29:54,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:29:54,470 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:29:54,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:29:46" (1/3) ... [2018-11-07 00:29:54,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5fdfcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:54, skipping insertion in model container [2018-11-07 00:29:54,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:29:47" (2/3) ... [2018-11-07 00:29:54,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5fdfcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:54, skipping insertion in model container [2018-11-07 00:29:54,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:54" (3/3) ... [2018-11-07 00:29:54,474 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label04_false-unreach-call.c [2018-11-07 00:29:54,485 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:29:54,493 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:29:54,509 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:29:54,550 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:29:54,550 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:29:54,551 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:29:54,551 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:29:54,551 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:29:54,551 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:29:54,551 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:29:54,551 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:29:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 00:29:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-07 00:29:54,592 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:29:54,593 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:29:54,595 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:29:54,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:29:54,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1727147373, now seen corresponding path program 1 times [2018-11-07 00:29:54,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:29:54,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:54,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:29:54,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:54,659 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:29:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:29:55,093 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:29:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:29:55,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:29:55,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:29:55,215 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:29:55,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:29:55,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:29:55,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:29:55,245 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 00:29:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:29:58,463 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 00:29:58,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:29:58,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-11-07 00:29:58,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:29:58,491 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 00:29:58,492 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 00:29:58,502 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:29:58,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 00:29:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 00:29:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 00:29:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-11-07 00:29:58,610 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 35 [2018-11-07 00:29:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:29:58,611 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-11-07 00:29:58,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:29:58,613 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-11-07 00:29:58,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-07 00:29:58,623 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:29:58,624 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:29:58,624 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:29:58,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:29:58,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1128673264, now seen corresponding path program 1 times [2018-11-07 00:29:58,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:29:58,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:58,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:29:58,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:29:58,628 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:29:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:29:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:29:58,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:29:58,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:29:58,957 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:29:58,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:29:58,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:29:58,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:29:58,960 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-11-07 00:30:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:30:08,503 INFO L93 Difference]: Finished difference Result 2960 states and 5498 transitions. [2018-11-07 00:30:08,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 00:30:08,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-11-07 00:30:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:30:08,530 INFO L225 Difference]: With dead ends: 2960 [2018-11-07 00:30:08,530 INFO L226 Difference]: Without dead ends: 2222 [2018-11-07 00:30:08,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:30:08,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2018-11-07 00:30:08,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2174. [2018-11-07 00:30:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2174 states. [2018-11-07 00:30:08,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3682 transitions. [2018-11-07 00:30:08,656 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3682 transitions. Word has length 111 [2018-11-07 00:30:08,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:30:08,657 INFO L480 AbstractCegarLoop]: Abstraction has 2174 states and 3682 transitions. [2018-11-07 00:30:08,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:30:08,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3682 transitions. [2018-11-07 00:30:08,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 00:30:08,662 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:30:08,662 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:30:08,662 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:30:08,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:30:08,663 INFO L82 PathProgramCache]: Analyzing trace with hash -950142376, now seen corresponding path program 1 times [2018-11-07 00:30:08,663 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:30:08,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:30:08,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:30:08,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:30:08,664 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:30:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:30:08,924 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:30:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:30:09,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:30:09,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:30:09,299 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:30:09,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:30:09,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:30:09,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:30:09,301 INFO L87 Difference]: Start difference. First operand 2174 states and 3682 transitions. Second operand 6 states. [2018-11-07 00:30:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:30:15,143 INFO L93 Difference]: Finished difference Result 8043 states and 14310 transitions. [2018-11-07 00:30:15,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:30:15,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-11-07 00:30:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:30:15,194 INFO L225 Difference]: With dead ends: 8043 [2018-11-07 00:30:15,194 INFO L226 Difference]: Without dead ends: 5875 [2018-11-07 00:30:15,229 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:30:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2018-11-07 00:30:15,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 5820. [2018-11-07 00:30:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5820 states. [2018-11-07 00:30:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5820 states to 5820 states and 8971 transitions. [2018-11-07 00:30:15,432 INFO L78 Accepts]: Start accepts. Automaton has 5820 states and 8971 transitions. Word has length 115 [2018-11-07 00:30:15,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:30:15,433 INFO L480 AbstractCegarLoop]: Abstraction has 5820 states and 8971 transitions. [2018-11-07 00:30:15,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:30:15,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5820 states and 8971 transitions. [2018-11-07 00:30:15,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-07 00:30:15,436 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:30:15,436 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:30:15,436 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:30:15,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:30:15,437 INFO L82 PathProgramCache]: Analyzing trace with hash -905675908, now seen corresponding path program 1 times [2018-11-07 00:30:15,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:30:15,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:30:15,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:30:15,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:30:15,438 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:30:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:30:15,682 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:30:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:30:15,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:30:15,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:30:15,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:30:15,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:30:15,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:30:15,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:30:15,731 INFO L87 Difference]: Start difference. First operand 5820 states and 8971 transitions. Second operand 6 states. [2018-11-07 00:30:19,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:30:19,864 INFO L93 Difference]: Finished difference Result 13797 states and 22451 transitions. [2018-11-07 00:30:19,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:30:19,866 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-11-07 00:30:19,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:30:19,918 INFO L225 Difference]: With dead ends: 13797 [2018-11-07 00:30:19,919 INFO L226 Difference]: Without dead ends: 7983 [2018-11-07 00:30:19,966 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:30:19,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7983 states. [2018-11-07 00:30:20,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7983 to 7902. [2018-11-07 00:30:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7902 states. [2018-11-07 00:30:20,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7902 states to 7902 states and 11582 transitions. [2018-11-07 00:30:20,182 INFO L78 Accepts]: Start accepts. Automaton has 7902 states and 11582 transitions. Word has length 117 [2018-11-07 00:30:20,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:30:20,182 INFO L480 AbstractCegarLoop]: Abstraction has 7902 states and 11582 transitions. [2018-11-07 00:30:20,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:30:20,182 INFO L276 IsEmpty]: Start isEmpty. Operand 7902 states and 11582 transitions. [2018-11-07 00:30:20,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 00:30:20,185 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:30:20,186 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:30:20,186 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:30:20,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:30:20,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1836053929, now seen corresponding path program 1 times [2018-11-07 00:30:20,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:30:20,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:30:20,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:30:20,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:30:20,189 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:30:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:30:20,479 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:30:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:30:20,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:30:20,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:30:20,726 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:30:20,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:30:20,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:30:20,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:30:20,727 INFO L87 Difference]: Start difference. First operand 7902 states and 11582 transitions. Second operand 6 states. [2018-11-07 00:30:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:30:24,273 INFO L93 Difference]: Finished difference Result 19254 states and 30272 transitions. [2018-11-07 00:30:24,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:30:24,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-11-07 00:30:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:30:24,365 INFO L225 Difference]: With dead ends: 19254 [2018-11-07 00:30:24,365 INFO L226 Difference]: Without dead ends: 11358 [2018-11-07 00:30:24,392 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:30:24,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11358 states. [2018-11-07 00:30:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11358 to 11325. [2018-11-07 00:30:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11325 states. [2018-11-07 00:30:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11325 states to 11325 states and 16212 transitions. [2018-11-07 00:30:24,702 INFO L78 Accepts]: Start accepts. Automaton has 11325 states and 16212 transitions. Word has length 120 [2018-11-07 00:30:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:30:24,702 INFO L480 AbstractCegarLoop]: Abstraction has 11325 states and 16212 transitions. [2018-11-07 00:30:24,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:30:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 11325 states and 16212 transitions. [2018-11-07 00:30:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 00:30:24,704 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:30:24,705 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:30:24,705 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:30:24,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:30:24,705 INFO L82 PathProgramCache]: Analyzing trace with hash 116215820, now seen corresponding path program 1 times [2018-11-07 00:30:24,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:30:24,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:30:24,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:30:24,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:30:24,707 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:30:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:30:24,970 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:30:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:30:25,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:30:25,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:30:25,336 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:30:25,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:30:25,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:30:25,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:30:25,337 INFO L87 Difference]: Start difference. First operand 11325 states and 16212 transitions. Second operand 6 states. [2018-11-07 00:30:28,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:30:28,338 INFO L93 Difference]: Finished difference Result 24429 states and 35685 transitions. [2018-11-07 00:30:28,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:30:28,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 00:30:28,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:30:28,396 INFO L225 Difference]: With dead ends: 24429 [2018-11-07 00:30:28,396 INFO L226 Difference]: Without dead ends: 13110 [2018-11-07 00:30:28,429 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:30:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13110 states. [2018-11-07 00:30:28,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13110 to 13084. [2018-11-07 00:30:28,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13084 states. [2018-11-07 00:30:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13084 states to 13084 states and 17325 transitions. [2018-11-07 00:30:28,739 INFO L78 Accepts]: Start accepts. Automaton has 13084 states and 17325 transitions. Word has length 125 [2018-11-07 00:30:28,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:30:28,740 INFO L480 AbstractCegarLoop]: Abstraction has 13084 states and 17325 transitions. [2018-11-07 00:30:28,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:30:28,740 INFO L276 IsEmpty]: Start isEmpty. Operand 13084 states and 17325 transitions. [2018-11-07 00:30:28,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 00:30:28,744 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:30:28,744 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:30:28,744 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:30:28,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:30:28,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1715390160, now seen corresponding path program 1 times [2018-11-07 00:30:28,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:30:28,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:30:28,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:30:28,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:30:28,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:30:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:30:28,995 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:30:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 00:30:29,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:30:29,198 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:30:29,199 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 128 with the following transitions: [2018-11-07 00:30:29,201 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [359], [361], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 00:30:29,281 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:30:29,281 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:30:31,721 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:30:37,755 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:30:37,756 INFO L272 AbstractInterpreter]: Visited 99 different actions 288 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:30:37,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:30:37,771 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:30:40,273 INFO L227 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 84.09% of their original sizes. [2018-11-07 00:30:40,274 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:31:04,637 INFO L415 sIntCurrentIteration]: We unified 126 AI predicates to 126 [2018-11-07 00:31:04,638 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:31:04,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:31:04,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-11-07 00:31:04,639 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:31:04,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 00:31:04,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 00:31:04,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-11-07 00:31:04,640 INFO L87 Difference]: Start difference. First operand 13084 states and 17325 transitions. Second operand 14 states. Received shutdown request... [2018-11-07 00:33:45,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 00:33:45,499 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:33:45,505 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:33:45,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:33:45 BoogieIcfgContainer [2018-11-07 00:33:45,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:33:45,506 INFO L168 Benchmark]: Toolchain (without parser) took 239311.11 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 00:33:45,507 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:33:45,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1203.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:33:45,509 INFO L168 Benchmark]: Boogie Procedure Inliner took 202.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -869.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:33:45,510 INFO L168 Benchmark]: Boogie Preprocessor took 183.31 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:33:45,510 INFO L168 Benchmark]: RCFGBuilder took 6675.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 255.7 MB). Peak memory consumption was 255.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:33:45,511 INFO L168 Benchmark]: TraceAbstraction took 231040.63 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -702.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 00:33:45,516 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1203.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 202.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -869.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 183.31 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6675.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 255.7 MB). Peak memory consumption was 255.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231040.63 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -702.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was constructing difference of abstraction (13084states) and FLOYD_HOARE automaton (currently 19 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (3365 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 230.9s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 190.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 716 SDtfs, 11052 SDslu, 725 SDs, 0 SdLazy, 14987 SolverSat, 3731 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 189 GetRequests, 98 SyntacticMatches, 35 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 28.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13084occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9926673567977914 AbsIntWeakeningRatio, 0.15873015873015872 AbsIntAvgWeakeningVarsNumRemoved, 376.96031746031747 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 243 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 750 NumberOfCodeBlocks, 750 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 743 ConstructedInterpolants, 0 QuantifiedInterpolants, 365056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 144/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown